153 entries under firm topic. ×

1
stout(adjective, strong, hard, tough)
1
thick(adjective, strong, hard, tough)
1
thickened(adjective, hard, solid, stiff)
1
unbreakable(adjective, strong, hard, severe)
1
unreasonable(tough, obstinate, stubborn, willful)
1
unsupple(adjective, hard, solid, stiff)
1
untoward(tough, unreasonable, obstinate, stubborn)
1
wooden(adjective, strong, hard, solid)
0
compacted(adjective, set, strong, hard)
0
consolidated(adjective, set, strong, hard)
0
durable(adjective, strong, hard, solid)
0
militant
0
packed(adjective, set, strong, hard)
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APASmart Define. (2016). inflexible thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms
ChicagoSmart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, inflexible thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>.
MLASmart Define. "inflexible thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms>